This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 329 |
| 3 | 3319 |
| 4 | 33216 |
| 5 | 332190 |
| 6 | 3321925 |
| 7 | 33219278 |
| 8 | 332192807 |
| 9 | 3321928092 |
| 10 | 33219280946 |
| 11 | 332192809486 |
| 12 | 3321928094885 |
| 13 | 33219280948871 |
| 14 | 332192809488733 |
| 15 | 3321928094887360 |
| 16 | 33219280948873621 |
| 17 | 332192809488736232 |
| 18 | 3321928094887362345 |
| 19 | 33219280948873623476 |